[PATCH v2] crypto/ipsec_mb: fix allocating mb_mgr in session

[Ciara Power <ciara.power@intel.com>]

When configuring the session, use the queue pair mb_mgr that was already
allocated if possible. If this doesn't exist, then allocate a new
mb_mgr.

This reduces unnecessary cycles creating an mb_mgr for every session
configured.

Fixes: c75542ae4200 ("crypto/ipsec_mb: introduce IPsec_mb framework")
Cc: stable@dpdk.org

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Signed-off-by: Ciara Power <ciara.power@intel.com>
---
v2: fixed indents
---
 drivers/crypto/ipsec_mb/ipsec_mb_ops.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/ipsec_mb/ipsec_mb_ops.c b/drivers/crypto/ipsec_mb/ipsec_mb_ops.c
index 3e52f95674..30f919cd40 100644
--- a/drivers/crypto/ipsec_mb/ipsec_mb_ops.c
+++ b/drivers/crypto/ipsec_mb/ipsec_mb_ops.c
@@ -434,15 +434,22 @@ ipsec_mb_sym_session_configure(
 	struct ipsec_mb_dev_private *internals = dev->data->dev_private;
 	struct ipsec_mb_internals *pmd_data =
 		&ipsec_mb_pmds[internals->pmd_type];
-	IMB_MGR *mb_mgr = alloc_init_mb_mgr();
+	struct ipsec_mb_qp *qp = dev->data->queue_pairs[0];
+	IMB_MGR *mb_mgr;
 	int ret = 0;
 
+	if (qp != NULL)
+		mb_mgr = qp->mb_mgr;
+	else
+		mb_mgr = alloc_init_mb_mgr();
+
 	if (!mb_mgr)
 		return -ENOMEM;
 
 	if (unlikely(sess == NULL)) {
 		IPSEC_MB_LOG(ERR, "invalid session struct");
-		free_mb_mgr(mb_mgr);
+		if (qp == NULL)
+			free_mb_mgr(mb_mgr);
 		return -EINVAL;
 	}
 
@@ -452,11 +459,13 @@ ipsec_mb_sym_session_configure(
 		IPSEC_MB_LOG(ERR, "failed configure session parameters");
 
 		/* Return session to mempool */
-		free_mb_mgr(mb_mgr);
+		if (qp == NULL)
+			free_mb_mgr(mb_mgr);
 		return ret;
 	}
 
-	free_mb_mgr(mb_mgr);
+	if (qp == NULL)
+		free_mb_mgr(mb_mgr);
 	return 0;
 }
 
-- 
2.25.1